From: Andrzej Hajda <a.hajda@samsung.com>
Date: Tue, 26 Jul 2016 08:45:55 +0000 (+0200)
Subject: drm/exynos/mixer: enable HDMI-PHY before configuring MIXER
X-Git-Tag: submit/tizen/20160810.050017~52
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=fe6367c905b65049ec4cd9b26d16023151c5851b;p=platform%2Fkernel%2Flinux-exynos.git

drm/exynos/mixer: enable HDMI-PHY before configuring MIXER

Mixer similarly to DECON-TV requires enabled clock generated
by HDMI-PHY to proper work.
The patch fixes hang on Odroid (X)U3 during console blank/unblank.

Change-Id: I9fa14fe02e54d2981fa06b43654f9616cd7074a8
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
---

diff --git a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
index fb32d662dd5d..77c8d576be03 100644
--- a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
+++ b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
@@ -494,13 +494,6 @@ static void decon_reset(struct decon_context *ctx)
 		       CRCCTRL_CRCEN | CRCCTRL_CRCSTART_F | CRCCTRL_CRCCLKEN);
 }
 
-/* this function will be replaced by clk API call */
-#ifdef CONFIG_DRM_EXYNOS_HDMI
-void exynos_hdmiphy_enable(struct exynos_drm_crtc *crtc);
-#else
-static void exynos_hdmiphy_enable(struct exynos_drm_crtc *crtc) {}
-#endif
-
 static void decon_dpms_on(struct decon_context *ctx)
 {
 	int ret;
diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.h b/drivers/gpu/drm/exynos/exynos_drm_drv.h
index 937893449f74..d0d77bdb1f20 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.h
@@ -314,6 +314,12 @@ static inline int exynos_dpi_remove(struct exynos_drm_display *display)
 }
 #endif
 
+#ifdef CONFIG_DRM_EXYNOS_HDMI
+void exynos_hdmiphy_enable(struct exynos_drm_crtc *crtc);
+#else
+static void exynos_hdmiphy_enable(struct exynos_drm_crtc *crtc) {}
+#endif
+
 /* This function creates a encoder and a connector, and initializes them. */
 int exynos_drm_create_enc_conn(struct drm_device *dev,
 				struct exynos_drm_display *display);
diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c
index 930ed9ce018f..4180f5f607f2 100644
--- a/drivers/gpu/drm/exynos/exynos_mixer.c
+++ b/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -1079,6 +1079,8 @@ static void mixer_poweron(struct mixer_context *ctx)
 	ctx->powered = true;
 	mutex_unlock(&ctx->mixer_mutex);
 
+	exynos_hdmiphy_enable(ctx->crtc);
+
 	mixer_reg_writemask(res, MXR_STATUS, ~0, MXR_STATUS_SOFT_RESET);
 
 	mixer_reg_write(res, MXR_INT_EN, ctx->int_en);